Quote from ProfitTakgFool:
I don't ever think you should use a Max Profit but using a Max Loss is a good idea. When you are trading well you should trade as large as comfortably possible and go for the kill. Markets change and your system won't work as well in the next market. Don't limit profits unless you consistently give them back and if you do then you have a time of day problem, not a max profit problem.
This is the conventional wisdom - every one says limit losses but not profits.
But if you're not limiting profits then you're not limiting greed.
Sure there are days when you can make over 3x your average profit. But the same greed that motivates going for huge gains also results in a huge drawdowns from the HW mark as a trader fails to take profits.